# License Revocation

***

<details>

<summary>Customization for esx_license</summary>

If you are an esx\_license user, you need to make some change in your esx\_license, as it does not have an export to delete license by default.

1. Navigate to esx\_license/server/main.lua
2. Find function `RemoveLicense`
3. Add under the export function

```lua
---@param identifier target identifier
---@param licenseType license type
---@param cb callback function
local function RemoveLicense(identifier, licenseType, cb)
    MySQL.update('DELETE FROM user_licenses WHERE type = ? AND owner = ?', {licenseType, identifier}, function(rowsChanged)
        if cb then
            cb(rowsChanged)
        end
    end)
end
exports('RemoveLicense', RemoveLicense) -- ADDED
```

</details>